Your patient has pneumonia. Since there are so many microorganisms causing pneumonia, what might be the best test to do first for identification of the agent?
A. A skin test
B. An antibody test
C. A Gram stain of a saliva specimen
D. A culture from a lung aspirate
Answer: D
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The breast muscle of turkeys and chickens is usually referred to as light meat, whereas that of wild ducks and geese is described as dark meat. How might this be explained?
A. Turkeys and chickens are not closely related to ducks and geese. B. Turkeys and chickens do not fly for sustained periods, whereas wild ducks and geese do. C. The muscles of ducks and geese do not contain myosins. D. The darker body color of ducks and geese provides protective camouflage against predators.
Clown fishes form symbiotic relationships with members of this group of cnidarians:
a. siphonophores. b. hydrozoans. c. anthozoans. d. scyphozoans. e. bryozoans.
An enzyme’s specificity is based on ____
a. the shape of its active site b. the amount of activation energy it requires c. the number of amino acids in its structure d. the nature of its cofactors e. the conformation of the products
Which region has seen the largest increase in ectotherm metabolic rate?
A) Arctic B) north temperate C) tropical D) south temperate